#include <QtGui/QApplication>
#include <QtGui/QPushButton>
#include <QtGui/QWidget>
#include <QtGui/QLabel>

int main(int argc, char *argv[])
{
    QApplication a(argc,argv);

    QWidget *widget = new QWidget;
    QLabel label(widget);

    label.setText(QObject::tr("Hello,world!!!"));

    widget->show();

    return a.exec();
}
